Title :
An active tagging system using circular polarization modulation
Author :
Kossel, M. ; Benedickter, H. ; Baechtold, W.
Author_Institution :
Lab. for Electromagn. Fields & Microwave Electron., Fed. Inst. of Technol., Zurich, Switzerland
Abstract :
An active read/write microwave tagging system using circular polarization modulation as a novel modulation scheme for RFID systems to reduce demodulation complexity and power consumption on the battery powered tag is presented. Additional coding of the circular polarization modulated data reduces transmission errors due to polarization inversion at multipath propagation.
Keywords :
antenna radiation patterns; computational complexity; demodulation; electromagnetic wave polarisation; identification technology; microstrip antennas; mobile antennas; modulation coding; multipath channels; radio links; 2.4 GHz; RFID systems; UHF; active read/write microwave tagging system; active tagging system; battery powered tag; circular polarization modulated data; circular polarization modulation; coding; demodulation complexity; modulation scheme; multipath propagation; polarization inversion; power consumption; transmission errors; Batteries; Decoding; Demodulation; Electromagnetic wave polarization; Microwave technology; Modulation coding; Radio frequency; Signal processing; Switches; Tagging;
Conference_Titel :
Microwave Symposium Digest, 1999 IEEE MTT-S International
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
0-7803-5135-5
DOI :
10.1109/MWSYM.1999.780274
